The Bionaire BWM7922-UM Warm Mist Humidifier features a digital humidistat with an LCD output, antimicrobial product protection, a large tank that will last up to 36 hours per use and an empty tank indicator light.
For example, the Bionaire Cool Mist Tower Humidifier features a space saving tower design, a digital humidistat, a reusable filter and a large tank that produces up to 36 hours worth of mist.
This model can run for up to 48 hours per setting and has a programmable humidistat that gives you the option to select your desired humidity level.
Adjustable Humidistat: A built-in humidistat isn't necessary but it is handy if you want to keep a room at a certain humidity level.
Without an adjustable humidistat, you'll have to manually turn the dehumidifier on and off.